Piston hand pump for fuel, oil and chemicals



FIG. 1 is a front elevational view of a piston hand pump for fuel, oil and chemicals showing our new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is an elevational view of one side thereof;

FIG. 5 is an elevational view of the other side thereof; and

FIG. 6 is a bottom plan view thereof. 

The ornamental design for a piston hand pump for fuel, oil and chemicals, as shown and described. 